文献类型：期刊文献

英文题名：Study on Three-Dimensional Dynamic Stability of Open-Pit High Slope under Blasting Vibration

作者：Li, Xiaoshuang[1,2,3];Li, Qihang[4];Hu, Yunjin[1];Chen, Qiusong[5];Peng, Jun[2];Xie, Yulin[4];Wang, Jiawen[4]

机构：[1]Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[2]Qilu Inst Technol, Coll Civil Engn, Jinan 250200, Peoples R China;[3]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[4]Jiangxi Univ Sci & Technol, Sch Resources & Environm Engn, Ganzhou 341000, Peoples R China;[5]Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China

年份：2022

卷号：2021

期号：Special Issue 4

外文期刊名：LITHOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000771941200016)、、EI(收录号：20220811672186)、Scopus(收录号：2-s2.0-85124677545)、WOS

基金：This work was supported by National Natural Science Foundation of China (no. 41867033), Postdoctoral Science Foundation of China (no. 2019M650144), and State Key Laboratory of Safety and Health for Metal Mines (zdsys2019-005). The authors wish to acknowledge these supports.

语种：英文

外文关键词：Blasting - Open pit mining - Phosphorus - Regression analysis - Slope stability - Unloading - Vibration analysis

外文摘要：The propagation process of blasting vibration has always been a difficult problem affecting the stability of high slopes in open-pit mines. Taking the Jianshan Phosphorus Mine as the research background, combined with engineering geological investigation, field blasting test, blasting vibration monitoring, numerical simulation technology, and theoretical analysis, the three-dimensional dynamic stability of the adjacent high slope after blasting vibration was systematically studied. In our study, a small-diameter buffer shock-absorbing blasting technology near the slope was proposed, which greatly improved the production efficiency. Through regression analysis of a large amount of vibration test data, the law of blasting vibration propagation in Jianshan stope and Haifeng stope was obtained. In addition, by establishing four three-dimensional geomechanical numerical models, the slope's own frequency, damping characteristics, and dynamic response acceleration distribution after detonation were studied, respectively. On the other hand, under the action of Ei Centro wave with 8-degree seismic intensity, the maximum total acceleration and maximum total displacement of the slope were calculated and analyzed. Both the explosion unloading of the 8-degree earthquake and the Ei Centro wave simulation results showed that the high slope near the Jianshan Phosphorus Mine was generally in a stable state. Thus, this study can provide technical support and theoretical guidance for mine blasting.